From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Blueprint sketch comparing three types of Kestrel forked connecting rods that have been tested.
| Identifier | ExFiles\Box 179b\3\ img330 | |
| Date | 13th March 1933 | |
| TYPES OF KESTREL FORKED CONNECTING RODS TESTED SKETCH 1 1 STANDARD FORKED ROD E 33476 2 STANDARD FORKED ROD WITH DEEPENED BOLT LUGS E 38644 DES 1817 BOLT LUGS DEEPENED TO 0.550 FROM 0.375 3 CURVED FOOT FORKED ROD D.E.S 1828 ROLLS-ROYCE, LTD PRINT ROOM MAR 13 1933 6 R.W.H 13-3-33 | ||